Inventor · disambiguated record
Todd A. Spierling
Also filed as: SPIERLING TODD A · SPIERLING TODD ALAN
34 granted patents·16 pending applications·211 citations·filing 1996–2024
96Inventor score
Files withHAMILTON SUNDSTRAND CORP35PRATT & WHITNEY CANADA6SPIERLING TODD A3BRUNO LOUIS J1GROSSKOPF ANDREW P1
Top patents by PatentIndex Score
50 records- 0198US9917490B2Tail cone generator with integral speed increasing gearboxHAMILTON SUNDSTRAND CORP·Filed 2014·Granted Mar 13, 2018·37 cites·14 claims
- 0297US11242156B2Plug in fluid cooled electrical connections for tail cone mounted generatorHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Feb 8, 2022·15 cites·11 claims
- 0397US11162379B2Temperature control device for tail cone mounted generatorHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Nov 2, 2021·14 cites·14 claims
- 0494US11802489B1Energy harvesting for hybrid propulsion systemsHAMILTON SUNDSTRAND CORP·Filed 2022·Granted Oct 31, 2023·3 cites·9 claims
- 0593US11667391B2Dual engine hybrid-electric aircraftPRATT & WHITNEY CANADA·Filed 2020·Granted Jun 6, 2023·3 cites·7 claims
- 0692US11732639B2Mechanical disconnects for parallel power lanes in hybrid electric propulsion systemsPRATT & WHITNEY CANADA·Filed 2019·Granted Aug 22, 2023·9 cites·3 claims
- 0791US8928166B2Mixed mode power generation architectureSEGER MARK J·Filed 2011·Granted Jan 6, 2015·24 cites·9 claims
- 0888US9035508B2Rotating resistor assemblyGROSSKOPF ANDREW P·Filed 2012·Granted May 19, 2015·10 cites·15 claims
- 0987US10309303B2Systems and methods of generating electrical powerHAMILTON SUNDSTRAND CORP·Filed 2016·Granted Jun 4, 2019·5 cites·17 claims
- 1085US8662445B2Hybrid power system architecture for an aircraftHAMILTON SUNDSTRAND CORP·Filed 2013·Granted Mar 4, 2014·9 cites·5 claims
- 1184US8855952B2Ram air turbine with flux regulated permanent magnet generator and testing methodSPIERLING TODD A·Filed 2011·Granted Oct 7, 2014·11 cites·20 claims
- 1284US8575900B2Rotor based air gap heating for air driven turbineSPIERLING TODD A·Filed 2010·Granted Nov 5, 2013·13 cites·20 claims
- 1382US11060449B2Integrated turbo-compressor with variable gear ratio transmission for internal combustion engineHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Jul 13, 2021·3 cites·8 claims
- 1481US8500064B2Hybrid power system architecture for an aircraftBRUNO LOUIS J·Filed 2011·Granted Aug 6, 2013·8 cites·8 claims
- 1578US11649064B2Integrated motor drive coolingHAMILTON SUNDSTRAND CORP·Filed 2020·Granted May 16, 2023·1 cites·16 claims
- 1676US10850860B1Internal combustion engines with unidirectional compounding drivesHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Dec 1, 2020·2 cites·20 claims
- 1771US12451769B2Multiplexed bi directional converters for hybrid electric aircraft propulsionHAMILTON SUNDSTRAND CORP·Filed 2024·Granted Oct 21, 2025·0 cites·15 claims
- 1871US2023366344A1Mechanical disconnects for parallel power lanes in hybrid electric propulsion systemsPRATT & WHITNEY CANADA·Filed 2023·Application pending·0 cites
- 1970US11319895B2Integrated tail cone and mounted generatorHAMILTON SUNDSTRAND CORP·Filed 2019·Granted May 3, 2022·1 cites·15 claims
- 2069US5796196AAdaptable rotating rectifier and suppression resistor assembly for two-pole, wound rotor of dynamoelectric machineSUNDSTRAND CORP·Filed 1996·Granted Aug 18, 1998·40 cites·10 claims
- 2165US11070118B2Electrical machine disconnection systemsHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Jul 20, 2021·0 cites·22 claims
- 2265US10027210B2Dual-output generatorsHAMILTON SUNDSTRAND CORP·Filed 2014·Granted Jul 17, 2018·1 cites·15 claims
- 2364US2025079920A1Switched reluctance electric machineHAMILTON SUNDSTRAND CORP·Filed 2024·Application pending·0 cites
- 2459US11999473B2Self-orienting podsHAMILTON SUNDSTRAND CORP·Filed 2021·Granted Jun 4, 2024·0 cites·17 claims
- 2559US8773101B2Power management for loads supplied with power from wild sourcesKRENZ MICHAEL·Filed 2011·Granted Jul 8, 2014·2 cites·10 claims
- 2658US9325269B1Two stage flux switching machine for an electrical power generation systemHAMILTON SUNDSTRAND CORP·Filed 2014·Granted Apr 26, 2016·0 cites·15 claims
- 2757US12319400B2Aircraft propulsion system and methods of featheringPRATT & WHITNEY CANADA·Filed 2020·Granted Jun 3, 2025·0 cites·13 claims
- 2853US10879779B2Electrical machine disconnection systemsHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Dec 29, 2020·0 cites·9 claims
- 2953US2019219021A1Gas turbine engine motoring system for bowed rotor engine startsHAMILTON SUNDSTRAND CORP·Filed 2019·Application pending·0 cites
- 3052US11926426B2Electric distributed propulsion using exhaust recovery powerPRATT & WHITNEY CANADA·Filed 2021·Granted Mar 12, 2024·0 cites·19 claims
- 3152US11312222B2Series hybrid architectures using compounded doubly fed machinesHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Apr 26, 2022·0 cites·9 claims
- 3251US12003132B2Hybrid electric secondary power and battery charging architecture and control systemHAMILTON SUNDSTRAND CORP·Filed 2022·Granted Jun 4, 2024·0 cites·19 claims
- 3351US11912422B2Hybrid electric aircraft and powerplant arrangementsPRATT & WHITNEY CANADA·Filed 2020·Granted Feb 27, 2024·0 cites·20 claims
- 3448US2020313499A1End turn coolingHAMILTON SUNDSTRAND CORP·Filed 2019·Application pending·0 cites
- 3548US2017234234A1Gas turbine engine motoring system for bowed rotor engine startsHAMILTON SUNDSTRAND CORP·Filed 2017·Application pending·0 cites
- 3648US2021071567A1Bi-directional pump/motorHAMILTON SUNDSTRAND CORP·Filed 2019·Application pending·0 cites
- 3747US2025277456A1Ultra-high temperature turbo generatorHAMILTON SUNDSTRAND CORP·Filed 2024·Application pending·0 cites
- 3846US11434778B2Integrated tail cone and mounted generator acoustic suppressionHAMILTON SUNDSTRAND CORP·Filed 2019·Granted Sep 6, 2022·0 cites·18 claims
- 3945US10800246B2Hybrid electric propulsion power supplyHAMILTON SUNDSTRAND CORP·Filed 2018·Granted Oct 13, 2020·0 cites·5 claims
- 4045US10293946B2Hybrid electricHAMILTON SUNDSTRAND CORP·Filed 2016·Granted May 21, 2019·0 cites·11 claims
- 4144US11018553B2Electrical machine disconnection systemsHAMILTON SUNDSTRAND CORP·Filed 2019·Granted May 25, 2021·0 cites·10 claims
- 4244US2016348589A1Aircraft engine assembly and method of generating electric energy for an aircraft power systemHAMILTON SUNDSTRAND CORP·Filed 2014·Application pending·0 cites
- 4343US2021047026A1Taxiing an aircraft having a hybrid propulsion systemHAMILTON SUNDSTRAND CORP·Filed 2020·Application pending·0 cites
- 4442US2021039801A1Hybrid electric aircraft energy regenerationHAMILTON SUNDSTRAND CORP·Filed 2020·Application pending·0 cites
- 4539US2016365814A1Variable speed ac generator system including independently controlled rotor fieldHAMILTON SUNDSTRAND CORP·Filed 2015·Application pending·0 cites
- 4639US2013022303A1Angular contact bearing assembly with clearance controlSPIERLING TODD A·Filed 2011·Application pending·0 cites
- 4739US2020186077A1Electrical system for vehicles having overvoltage protectionHAMILTON SUNDSTRAND CORP·Filed 2018·Application pending·0 cites
- 4838US2013296091A1Variable speed drive for aircarft applicationsLEMMERS JR GLENN C·Filed 2012·Application pending·0 cites
- 4937US2017126159A1Generation system with braking mechanismHAMILTON SUNDSTRAND CORP·Filed 2015·Application pending·0 cites
- 5036US2017234237A1Gas turbine engine motoring variable frequency generator system for bowed rotor engine startsHAMILTON SUNDSTRAND CORP·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →